Instruments and methods used in radiometry - II (1913)
National Bureau of Standards · leaf 59
UP £k. zux … Fig. 17 suspension was deflected to the left. When examined under amicroscope a small speck of iron oxide, about 0.05 by 0.1 mm wasfound pivoted on the end of one of the small magnets. On remov-ing it the difficulty was remedied. Evidently as the magnetsystem rotated, thus changing the direction of…
Measurements and use of instruments · Thermometry, pyrometry and calorimetry · Heat flow, thermal and thermodynamic processes
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